I voted 'yes' because I don't ever want to be without a cat in the house. (Yeah, I know... you were all expecting it to be a sheep.) There are lots of other animals that I like for various reasons, such as the 'devil' for the same reasons that big man cited, but a cat is the only one that I have to have as a pet.

I'm very fond of my guineapigs, but I wouldn't say I have an absolute favorite (so I need to change my vote.)
To name a few I love:
Cats
Eagles
Gulls and other seabirds
Most cephalapods
Seals
Whales
Frogs.